How do I cite Blender builds/release correctly for Publications using Bibtex?
Blender has no functionality to do this, but you could use a Python script.

def citation():
    import bpy

    build_year = bpy.app.build_date.partition(b'-')[0].decode('ascii')

    return '''\
@Manual{,
   title = {Blender - a 3D modelling and rendering package},
   author = {{Blender Online Community}},
   organization = {Blender Foundation},
   address = {Blender Institute, Amsterdam},
   year = {%s},
   url = {http://www.blender.org},
 }''' % build_year

# test to see it works:
print(citation())